Chair-leg attachment.



1. T. McCLELLAND.

CHAIR LEG- ATTACHMENT. APPLTCATION FILED OCT. I. 1914.

Patented June 19, 1917.

JAMES T. MCCLELLAND, 0F KINGS MILLS, OHIO.

CHAIR-LEG ATTACHMENT.

Specification of Letters Patent.

Patent-ed J nne 19, 1917.

Application filed October 1, 1914. Serial No. 864,491.

To all whom it may concern Be it known that l, James T. ;\-le(. |.1 :|i-LAW), citizen of the. United States, residing at Kings Mills. in thecounty of \Varren and State of Ohio. have. invented certain new anduseful Improvements in Chair-Leg Attachments. of which the following isa specification.

My invention has reference to chair leg attachments. and as its primaryobject contemplates means, detachable in its nature. whereby the legs ofan ordinary chair may be variably lengthened as occasion demands.

A further object of the invention is to so construct theseveralattachments as to provide for their adjusted arrangement in an operativemanner over the legs of the chair without the use of mechanicalfastening or retaining means; friction being utilized in its stead. 7

As a still further object. I aim to provide an attachment or devicewhich is not only extremely simple in construction, but ellicicnt inoperation. and can be manufactured and marketed at a minimum cost.

The above and additional objects are accomplished by such means as areillustrated in their preferred embodiment in the accompanying drawings,described in the following specification and then more particularlypointed out in the claims which are appended hereto and form a part ofthis application.

In describing my invention in detail reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a perspective view of an ordinary chair illustrating the manner inwhich the attachments are associated with the legs thereof;

Fig. 2 is a longitudinal sectional view of one of the chair legattachments, the same being shown detached; and

Fig. 3 is a detail perspective View of the clamping ring.

Before proceeding with the description of the drawings, I desire to callparticular attention to the fact that while I have evolved my inventionwith reference to its application as a chair leg attachment. the samemay be readily utilized in a capacity similar to that for which it isprimarily designed in connection with stools and other leg-supportedarticles or devices.

Referring now to the drawings by numurals, 1 designates an ordinarychair and 2, as an entirety, the attachment associated therewith.

The attachment in its preferred embodiment consists of a pair of tubularclamping members designated respectively 3 and 4, said members beingsubstantially semi-cylindrical to form. when arranged in parallelrelation. a tubular socket within which the leg of the chair is fittedand clamped. Each member 3 and 4 is hinged as at 5 to a tread or floorengaging member 6, the latter maintaining, when the. members 3 and 4 arearranged in parallel relation, the said members immovable relatively toeach other and to the chair.

As a means whereby the chair leg is held in its desired adjustedposition within the socket formed by the members 3 and 4, I provide aclamping ring 7. the latter being slidably arranged over the attachmentand engageable with the members 3 and 4 to hold the latter in firmfrictional engagementwith the leg of the chair.

As shown to advantage in Fig. 2, the said members 3 and 4 when parallel.form a substantially frusto-conical tubular socket, the upper extremityof which is enlarged in order that the retaining or clamping ring 7 maybe moved into engagement therewith to provide for the clamping of themembers 3 and 4 against the legs of the chair.

The members 3 and 4 being constructed of rubber or the like material. itis evident that the chair legs. when held in frictional contacttherewith by the adjustment of the clamping ring 7. cannot be movedlongitudinally relatively to the attachment and that friction alone isutilized as the means supporting the chair in its desired elevated andadjusted position.

In use. the attachment 2 is arranged over each leg of the chair l-audadjusted thereon in order that the seat of the chair may be positionedat the desired height. througl'i manipulation of the several clampingrings 7. the said rings holding the members 3 and 4 in frictionalcontact with the respective legs.

. From the foregoing. taken in connection with the accompanying drawingsit is evi dent that the chair may be supported with its seat upon anexact horizontal plane through proper adjustment of the severalattachments 2; that the use of mechanical retaining means is unnecessaryin'locking the attachments in the desired adjusted position relativelyto the chair; and that by modifying the formation of the members 3 andl, the attachment may be used in connection with chairs, the shape ofthe legs of which'var 1 in cross section.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

1. In a chair leg attachment, a floor engaging member, relativelymovable clamping members hingedly connected to said floor engagingmember at substantially diametrically opposite points, each of the saidclamping members being substantially semicircular in cross section andclosed at one endto engage with the top face of the floor engagingmember when moved into a "ertial position, the said clamping memberswhen thus moved forming a substantially cylindrical tapering socket intowhich the chair leg is fitted, and a means mounted for contact with theexterior surface of the clamping members to maintaln sa d members infirm frictional contact with the chair leg, substantially as described.

2. In a chair leg attachment, a floor engaging member, having a flatupper surface, relatively movable clamping members hingedly connected tosaid floor engaging member at diametrically opposite points, each ofsaid clamping members being substantially semi-circular in cross sectionand closed at the lower end to engage with the top face of the floorengaging member when said clamping members are moved to verticalposition thereby forming a rigid connection between the said members,the said clamping members when thus moved forming a substantiallycylindrical tapering

